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- W2019959364 abstract "We propose a miniature spherical motor using iron-gallium alloy (Galfenol). This motor consists of four rods of Galfenol with square cross-section, a wound coil, a permanent magnet, an iron yoke and a spherical rotor placed on the edge of the rods. The magnetomotive force of the magnet provides bias magnetostriction for the rods and an attractive force that maintains the rotor on the rods. When currents of 180 deg phase difference flow in pairs of opposing coils, a torque is exerted on the rotor is by pushing (expansion) and pulling (contraction) of the rods. Rotation about a single axis is realized by a sawtooth current, such that the rotor rotates with slow expansion and slips at the rapid contraction. The motor can be fabricated at small sizes and driven with a low voltage, suitable for application as a microactuator for rotating the camera and mirror in endoscopes." @default.
- W2019959364 created "2016-06-24" @default.
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- W2019959364 date "2008-03-27" @default.
- W2019959364 modified "2023-10-03" @default.
- W2019959364 title "Miniature spherical motor using iron-gallium alloy (Galfenol)" @default.
- W2019959364 doi "https://doi.org/10.1117/12.776490" @default.
- W2019959364 hasPublicationYear "2008" @default.
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